Engineers and technicians prepare for a crane lift to deintegrate the Ocean Color Instrument (OCI) from the Tilt Mechanism after successful environmental testing. The PACE (Plankton, Aerosol, Cloud, ocean Ecosystem) spacecraft is seen in the background in the Spacecraft Checkout Area (SCA) cleanroom. OCI is a highly advanced optical spectrometer that will be used to measure properties of light over portions of the electromagnetic spectrum. It will enable continuous measurement of light at finer wavelength resolution than previous NASA satellite sensors, extending key system ocean color data records for climate studies. OCI is PACE's (Plankton, Aerosol, Cloud, ocean Ecosystem) primary sensor built at Goddard Space Flight Center in Greenbelt, MD.